SC1154(2000) 데이터 시트보기 (PDF) - Semtech Corporation

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SC1154
(Rev.:2000)

PROGRAMMABLE SYNCHRONOUS DC/DC HYSTERETIC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PROGRAMMABLE SYNCHRONOUS

DC/DC HYSTERETIC CONTROLLER

FOR ADVANCED PROCESSORS

SC1154

PRELIMINARY - March 1, 2000

ELECTRICAL CHARACTERISTICS (cont.)

Unless specified: 0 < TJ < 125°C, VIN = 12V

PARAMETER

SYMBOL

CONDITIONS

SOFT START

Charge Current

Discharge Current

INHIBIT COMPARATOR

ICHG

Idischg

VSS = 0.5V, resistance from

VREFB pin to AGND = 20kΩ,

VREFB = 1.3V

Note: ICHG = (IVREFB / 5)

V(S/S) = 1V

Start Threshold

VIN12V UVLO

VstartINH

Start Threshold

Hysteresis

HYSTERETIC COMPARATOR

VstartUVLO

VhysUVLO

Input Offset Voltage

Input Bias Current

Hysteresis Accuracy

Hysteresis Setting

DROOP COMPENSATION

VosHYSCMP VDROOP pin grounded

IbiasHYSCMP

VHYS_ACC

VHYS_SET

Initial Accuracy

VDROOP_ACC VDROOP = 50mV

OVERCURRENT PROTECTION

OCP Trip Point

Input Bias Current

HIGH-SIDE VDS SENSING

VOCP

IbiasOCP

Gain

Initial Accuracy

IOUT Source

IOUT Sink Current

Output Voltage Swing

VIOUT_ACC VHISENSE = 12V, VIOUTLO = 11.9V

IsourceIOUT VIOUT = 0.5V, VHISENSE = 12V,

VIOUTLO = 11.5V

IsinkIOUT

VIOUT = 0.05V, VHISENSE = 12V,

VIOUTLO = 12V

VHISENSE = 11V,

RIOUT = 10k0hm

MIN

10.4

1

9.25

1.8

0.09

500

40

0

TYP

13

1

2.0

10

2

0.1

2

50

MAX

15.6

2.4

10.75

2.2

5

1

7

60

5

0.11

100

6

3.75

UNITS

µA

mA

V

V

V

mV

µA

mV

mV

mV

V

nA

V/V

mV

µA

µA

V

© 2000 SEMTECH CORP.

5

652 MITCHELL ROAD NEWBURY PARK CA 91320

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